Joint-fastener.



" Patented May 9,1911.

INVENTU Btu/M1754? ATTORNEYS D. A. WRIGHT.

JOINT FASTENER APPLICATION run) run: so, 1910;

wrmesses; 9Q?

UNITED STATES PATENT OFFICE.

DAVID ALEXANDER WRIGHT, OF SAN ANTONIO, TEXAS.

JOINT-FASTENER.

To all whom it mcmy concern:

. Be it known that I, DAVID A. WRIGH a citizen of the United States, anda resldent of San Antonio, in the county of Bexar and State of Texas,have invented a new and Improved J oint-Fastener, of which the followingis a full, clear, and exact description.

My invention relates to joint fasteners, and it has for its object toprovide a fastener which may be manufactured at little expense and whichis so constructed that it may be quickly applied.

The fastener is particularly adapted for screens and it is provided witharms, with cut portions forming laterally projecting teeth, so that whenthe arms are pushed in wardly in kerfs in a member of the frame of thescreen, the teeth will be pressed in the direction of the plane of thearms, the resiliency of the material of which the arms are made, forcingthe teeth outwardly at each side to. engage the member of the frame andto prevent the withdrawal of the arms. The head of the fastener, whichis secured to the arms, is disposed in a kerf in another member of theframe, the head being provided with flanges, with cutting edges, whichengage the second-mentioned member to hold the two members together.

Still other objects of the invention will appear in the followingcomplete description.

In this specification I will describe the preferred form of myinvention, it being understood that the scope of the invention isdefined in the appended claims.

Reference is to be had to the accompanying drawings forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in all the views, and in which Figure 1 is afragmentary view, partially in section, showing a corner of a frame heldtogether w1th my fastener; Fig. 2 is a sectional view on the line 2-2 ofFig. 1; Fig. 3 is a sectional View on the line 33 of Fig. 1; Fig. 4; isa perspective view showing my joint fastener; Fig. 5 is a fragmentaryview of two members of a frame held together by a modified form of thefastener; Fig. 6 is a erspective view of the modified form of theastener.

By referring to Fig.4 of the drawings, it

Will be seen that the joint fastener 5 has a head 6 with flange teeth 7disposed at each Specification of Letters Patent.

Patented May 9, 1911.

Application filed June 30, 1910. Serial No. 569,670.

side, at right angles to the body of the fastener. Integral with thehead 6, there are two arms 8, which are spaced from each other, thesearms 8 having cut portions 9 in their edges, facing each other, by whichmeans teeth 10 are formed, which are bent laterally, as s 1OWI1 in thedrawings. I- prefer to form four or more teeth 10 on each of the arms 8,two or more of these teeth 10 being bent laterally at each side of thearms respectively.

The joint fasteners having been manufactured as has been described, theyare applied to the members 11 and 12 of the frame 13 in the followingmanner: A kerf 14 is made in the member 11 on its inner side, as bestshown in Fig. 2 of the drawings, this kerf 14 extending through the top16 of the mem her, and kerfs 15 are made in the member 12 at its top andbottom, these kerfs 15 extending through the end of the member. Thishaving been done, the oint fastener 5 is disposed over the kerf 1 1 andis driven into the said kerf from the top of the memher 11, the flangeteethfl cutting the member 11 at each siil'ebfthe end of the kerf 14 asthe fastener is driven into position. IVhen this has been done, the arms8 are driven into the kerfs 15 at the top and at the bottom of themember 12, the bottoms of the kerfs 15 being spaced apart at a distancesubstantially the same as the distance between the arms 8. While theteeth 10 will permit the arms 8 to be driven readily into the kerfs 15,the said teeth 10, because i, of their resiliency, will engage themember 12 at the sides of the kerfs and prevent the withdrawal of thearms from the kerfs.

As shown in the drawings, these teeth 10 have their terminals disposedin the direc tion of the head 6. The flange teeth 7 will prevent thewithdrawal of the fastener from the side of the member 11. In this way,

the members are secured at the four corners of the frame.

In Fig. 6- of the drawings, I show a modified form of my fastener, inwhich the teeth 7 of the head 6 are disposed in alinement with the headand are not bent, as 1 shown in Fig. 4: of the drawings. This modifiedform of the fastener is used to secure the transverse member 17 to themem bers 11 of the frame. Kerfs 18 are made in the top and the bottom ofthe transverse member 17, these kerfs 18 extending through the ends ofthe member, the arms 8 of the modified form of the fastener beinginserted in these kerfs 18 and the teeth 10 on the arms preventing thewithdrawal of the arms in a manner which has been explained. The heads 6of the modified form of the fastener are disposed in recesses 19 in thesides of the members 11, the teeth 7* extending into the members 11 tohold the fasteners and the transverse member 17 in place.

In constructing the frame 18, the fasteners are driven into the upperand lower ends of the members 11 and the two fasteners of the modifiedform are secured to the transverse member 17 as has been described. Thefasteners, which have been secured to the ends of the members 11, arethen disposed in alinement with the kerfs 15, and the heads 6 on thefasteners, which have been secured to the transverse member 17, aredisposed in alinement with the recesses 19 in the members 11. Themembers 11 are then driven toward each other, clamping the members 12and the tltlnSVQlSQ members 17 therebetween.

Having thus described my invention, I claim as new and desire to secureby Letters Patent:

1. In combination with a member having kerfs extending through oppositesides, a joint fastener having two arms spaced. from each other anddisposed in the kerfs respectively, teeth on the inner edges of the armsfor engagii'ig said member, each of the arms being adapted for holdingits companion arm in one of the kerfs of the said member respectively,and means by which the joint fastener may be secured to anothermen'iber.

2. In. COD'lbiDELiLIOIl with two members having kerfs, a joint fastenerhaving a head with teeth, the head being disposed in the kerf in one ofthe members, with the teeth engaging the member, two arms secured to thehead, spaced from each other and disposed in herfs in opposite sides ofthe other member, and teeth on the inner sides of the arms for engagingthe 1astn'1entioned member each of the arms being adapted for holdingits companion arm in a kerf in the secend-mentioned men'iber.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

DAVID ALEXANDER WRIGHT.

Witnesses FRED L. NoYEs, CLYDE EVANS.

Copies of this patent may be obtained. for five cents each, byaddressing the Commissioner of .Patents, Washington, D. 0.

